The so-called super Earth — known as 55 Cancri e — is among the few rocky planets outside our solar system with a significant atmosphere.
— A thick atmosphere has been detected around a planet that’s twice as big as Earth in a nearby solar system, researchers reported Wednesday.rocky planets outside our solar system
“It’s probably the firmest evidence yet that this planet has an atmosphere,” said Ian Crossfield, an astronomer at the University of Kansas who studies exoplanets and was not involved with the research.Super Earth refers to a planet’s size — bigger than Earth but smaller than Neptune. The boiling temperatures on this planet — which can reach as hot as 4,200 degrees Fahrenheit – mean that it is unlikely to host life.
The exoplanet 41 light years away is eight times heavier than Earth and circles its star Copernicus so closely that it has permanent day and night sides. A light-year is nearly 6 trillion miles . Its surface is encrusted with magma oceans. They separated the light emitted from the planet versus its star and used the data to calculate the planet's temperature. There's evidence the planet's heat was being distributed more evenly across its surface – a party trick atmospheres are known for.
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